# A tibble: 2 × 6
country continent year lifeExp pop gdpPercap
<fct> <fct> <int> <dbl> <int> <dbl>
1 Australia Oceania 2002 80.4 19546792 30688.
2 Australia Oceania 2007 81.2 20434176 34435.
GVPT399F: Power, Politics, and Data
dplyr basicsFirst argument is always a data object (for example, a dataframe).
Subsequent arguments typically describe which columns to operate on, using the variable names (without quotes).
Output is always a new data object.
filter()filter()# A tibble: 420 × 6
country continent year lifeExp pop gdpPercap
<fct> <fct> <int> <dbl> <int> <dbl>
1 Afghanistan Asia 1952 28.8 8425333 779.
2 Afghanistan Asia 1957 30.3 9240934 821.
3 Afghanistan Asia 1962 32.0 10267083 853.
4 Afghanistan Asia 1967 34.0 11537966 836.
5 Afghanistan Asia 1972 36.1 13079460 740.
6 Afghanistan Asia 1977 38.4 14880372 786.
7 Afghanistan Asia 1982 39.9 12881816 978.
8 Afghanistan Asia 1987 40.8 13867957 852.
9 Afghanistan Asia 1992 41.7 16317921 649.
10 Afghanistan Asia 1997 41.8 22227415 635.
# ℹ 410 more rows
filter()# A tibble: 88 × 6
country continent year lifeExp pop gdpPercap
<fct> <fct> <int> <dbl> <int> <dbl>
1 Bahrain Asia 1992 72.6 529491 19036.
2 Bahrain Asia 1997 73.9 598561 20292.
3 Bahrain Asia 2002 74.8 656397 23404.
4 Bahrain Asia 2007 75.6 708573 29796.
5 Botswana Africa 1962 51.5 512764 984.
6 Botswana Africa 1967 53.3 553541 1215.
7 Botswana Africa 1972 56.0 619351 2264.
8 Botswana Africa 1977 59.3 781472 3215.
9 Botswana Africa 1982 61.5 970347 4551.
10 Comoros Africa 1997 60.7 527982 1174.
# ℹ 78 more rows
filter()# A tibble: 1,704 × 6
country continent year lifeExp pop gdpPercap
<fct> <fct> <int> <dbl> <int> <dbl>
1 Afghanistan Asia 1952 28.8 8425333 779.
2 Afghanistan Asia 1957 30.3 9240934 821.
3 Afghanistan Asia 1962 32.0 10267083 853.
4 Afghanistan Asia 1967 34.0 11537966 836.
5 Afghanistan Asia 1972 36.1 13079460 740.
6 Afghanistan Asia 1977 38.4 14880372 786.
7 Afghanistan Asia 1982 39.9 12881816 978.
8 Afghanistan Asia 1987 40.8 13867957 852.
9 Afghanistan Asia 1992 41.7 16317921 649.
10 Afghanistan Asia 1997 41.8 22227415 635.
# ℹ 1,694 more rows
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%in% is in